/*
 * Trang tiểu sử Chủ tịch Hồ Chí Minh — thiết kế "hành trình lịch sử".
 * Font trang trọng: Playfair Display (tự host, hỗ trợ tiếng Việt).
 */

/* Font đầy đủ (không cắt subset) — hiển thị trọn vẹn dấu tiếng Việt: ế, ề, ấ, ố, ắ... */
@font-face {
    font-family: "Playfair Display";
    font-style: normal;
    font-weight: 400 900;
    font-display: swap;
    src: url("../fonts/playfair-full.ttf") format("truetype");
}

:root {
    --bio-red-deep: #6d0d11;
    --bio-red: #8e1418;
    --bio-gold: #d4af37;
    --bio-gold-soft: rgba(212, 175, 55, 0.35);
    --bio-serif: "Playfair Display", Georgia, "Times New Roman", serif;
}

/* ============ HERO ĐIỆN ẢNH ============ */
.bio-cine {
    position: relative;
    min-height: 68vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    color: #fff;
    background:
        radial-gradient(ellipse at 50% 115%, rgba(212, 175, 55, 0.28), transparent 55%),
        linear-gradient(165deg, #4d090c 0%, var(--bio-red-deep) 45%, var(--bio-red) 100%);
    border-bottom: 5px solid var(--bio-gold);
}

/* Vầng sáng vàng thở chậm phía sau ngôi sao */
.bio-cine::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 620px;
    height: 620px;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(212, 175, 55, 0.22) 0%, transparent 62%);
    animation: bio-breathe 6s ease-in-out infinite;
    pointer-events: none;
}

@keyframes bio-breathe {
    0%, 100% { opacity: 0.55; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.12); }
}

/* Tia sáng tỏa từ tâm, xoay rất chậm */
.bio-cine::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1400px;
    height: 1400px;
    transform: translate(-50%, -50%);
    background: repeating-conic-gradient(
        rgba(212, 175, 55, 0.05) 0deg 6deg,
        transparent 6deg 18deg
    );
    animation: bio-rotate 90s linear infinite;
    pointer-events: none;
}

@keyframes bio-rotate {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.bio-cine .container {
    position: relative;
    z-index: 1;
}

.bio-star-medal {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 92px;
    height: 92px;
    border-radius: 50%;
    border: 2px solid var(--bio-gold);
    box-shadow: 0 0 0 8px rgba(212, 175, 55, 0.12), 0 0 40px rgba(212, 175, 55, 0.35);
    color: var(--bio-gold);
    font-size: 2.6rem;
    margin-bottom: 1.5rem;
}

.bio-star-medal::before {
    content: "";
    position: absolute;
    inset: -14px;
    border-radius: 50%;
    border: 1px dashed rgba(212, 175, 55, 0.45);
    animation: bio-rotate-s 30s linear infinite;
}

@keyframes bio-rotate-s {
    to { transform: rotate(360deg); }
}

.bio-cine-kicker {
    letter-spacing: 0.45em;
    font-size: 0.85rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.75);
    text-transform: uppercase;
}

.bio-cine-title {
    font-family: var(--bio-serif);
    font-weight: 800;
    font-size: clamp(2.2rem, 6vw, 4.4rem);
    letter-spacing: 0.03em;
    line-height: 1.15;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.45);
}

.bio-cine-years {
    font-family: var(--bio-serif);
    color: var(--bio-gold);
    font-weight: 700;
    font-size: clamp(1.2rem, 2.6vw, 1.7rem);
    letter-spacing: 0.35em;
}

.bio-cine-divider {
    width: 140px;
    height: 2px;
    margin: 1.1rem auto;
    background: linear-gradient(to right, transparent, var(--bio-gold), transparent);
}

.bio-cine-sub {
    color: rgba(255, 255, 255, 0.88);
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    font-style: italic;
}

/* Dòng chữ hiện dần lần lượt */
.bio-fade {
    opacity: 0;
    transform: translateY(22px);
    animation: bio-fade-up 0.9s ease forwards;
}

.bio-fade-1 { animation-delay: 0.15s; }
.bio-fade-2 { animation-delay: 0.4s; }
.bio-fade-3 { animation-delay: 0.65s; }
.bio-fade-4 { animation-delay: 0.9s; }
.bio-fade-5 { animation-delay: 1.15s; }

@keyframes bio-fade-up {
    to { opacity: 1; transform: translateY(0); }
}

/* Mũi tên mời cuộn */
.bio-scroll-hint {
    position: absolute;
    bottom: 1.4rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--bio-gold);
    font-size: 1.4rem;
    animation: bio-bounce 2s ease-in-out infinite;
    z-index: 1;
    text-decoration: none;
}

.bio-scroll-hint:hover { color: #fff; }

@keyframes bio-bounce {
    0%, 100% { transform: translate(-50%, 0); opacity: 0.9; }
    50% { transform: translate(-50%, 10px); opacity: 0.5; }
}

/* ============ DẢI TRÍCH DẪN ============ */
.bio-quote-band {
    background:
        radial-gradient(ellipse at 12% 50%, rgba(212, 175, 55, 0.14), transparent 55%),
        linear-gradient(120deg, var(--bio-red-deep), var(--bio-red));
    color: #fff;
    position: relative;
    overflow: hidden;
}

.bio-quote-band .quote-mark-big {
    font-family: var(--bio-serif);
    font-size: 7rem;
    line-height: 0.6;
    color: var(--bio-gold-soft);
    display: block;
}

.bio-quote-band blockquote p {
    font-family: var(--bio-serif);
    font-size: clamp(1.15rem, 2.4vw, 1.6rem);
    font-weight: 700;
    font-style: italic;
    line-height: 1.65;
}

.bio-quote-band footer {
    color: var(--bio-gold);
    letter-spacing: 0.25em;
    font-size: 0.9rem;
    font-weight: 600;
}

/* ============ BÀI TIỂU SỬ ============ */
.bio-article {
    background: #fff;
    border-radius: 1.1rem;
    padding: 2.5rem 2.75rem;
    box-shadow: 0 0.4rem 1.6rem rgba(33, 37, 41, 0.08);
    border-top: 5px solid var(--bio-gold);
}

@media (max-width: 767.98px) {
    .bio-article { padding: 1.5rem 1.15rem; }
}

.bio-article .article-content > p:first-of-type::first-letter {
    font-family: var(--bio-serif);
    font-size: 3.4em;
    font-weight: 800;
    color: var(--bio-red);
    float: left;
    line-height: 0.85;
    padding: 0.06em 0.12em 0 0;
}

.bio-article .article-content h2 {
    font-family: var(--bio-serif);
    font-size: 1.6rem;
    color: var(--bio-red-deep);
    padding-bottom: 0.4rem;
    border-bottom: 2px solid rgba(212, 175, 55, 0.4);
}

/* ============ TIÊU ĐỀ KHU VỰC ============ */
.bio-section-title {
    font-family: var(--bio-serif);
    font-weight: 800;
    font-size: clamp(1.6rem, 3.4vw, 2.3rem);
    color: var(--bio-red-deep);
    letter-spacing: 0.04em;
}

.bio-section-orn {
    color: var(--bio-gold);
    letter-spacing: 0.5em;
    font-size: 0.95rem;
}

/* ============ HÀNH TRÌNH (TIMELINE) ============ */
.jt {
    position: relative;
    max-width: 980px;
    margin: 0 auto;
    padding: 1.5rem 0;
}

.jt-spine {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    transform: translateX(-50%);
    background: rgba(201, 162, 39, 0.22);
    border-radius: 4px;
    overflow: hidden;
}

/* Phần trục "tự vẽ" theo tiến độ cuộn (JS đặt --jt-progress) */
.jt-progress {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--jt-progress, 0%);
    background: linear-gradient(to bottom, var(--bio-gold), var(--bio-red));
    transition: height 0.15s linear;
}

.jt-item {
    position: relative;
    width: 50%;
    padding: 0 3.4rem 3rem 0;
    opacity: 0;
    transform: translateX(-46px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.jt-item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 3rem 3.4rem;
    transform: translateX(46px);
}

.jt-item.jt-in {
    opacity: 1;
    transform: translateX(0);
}

/* Huy hiệu biểu tượng ở tâm trục */
.jt-medal {
    position: absolute;
    top: 0;
    right: -31px;
    width: 62px;
    height: 62px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(150deg, var(--bio-red), var(--bio-red-deep));
    border: 3px solid var(--bio-gold);
    color: var(--bio-gold);
    box-shadow: 0 0 0 6px #fbf6ec, 0 0.3rem 0.9rem rgba(142, 20, 24, 0.35);
    z-index: 2;
    transition: box-shadow 0.4s ease, transform 0.4s ease;
}

.jt-item:nth-child(even) .jt-medal {
    right: auto;
    left: -31px;
}

.jt-item.jt-active .jt-medal {
    transform: scale(1.12);
    box-shadow: 0 0 0 6px #fbf6ec, 0 0 0 12px rgba(212, 175, 55, 0.25),
        0 0 30px rgba(212, 175, 55, 0.55);
}

/* Năm lớn kiểu serif */
.jt-year {
    font-family: var(--bio-serif);
    font-weight: 800;
    font-size: clamp(1.35rem, 2.6vw, 1.9rem);
    color: var(--bio-red);
    line-height: 1;
    margin-bottom: 0.5rem;
    transition: color 0.4s ease, text-shadow 0.4s ease;
}

.jt-item.jt-active .jt-year {
    color: #b8860b;
    text-shadow: 0 0 24px rgba(212, 175, 55, 0.55);
}

.jt-card {
    background: #fff;
    border-radius: 1rem;
    padding: 1.4rem 1.6rem;
    box-shadow: 0 0.3rem 1.1rem rgba(33, 37, 41, 0.08);
    border: 1px solid rgba(201, 162, 39, 0.25);
    position: relative;
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.jt-item.jt-active .jt-card {
    transform: translateY(-4px);
    border-color: rgba(212, 175, 55, 0.7);
    box-shadow: 0 0.8rem 1.8rem rgba(33, 37, 41, 0.14);
}

/* Mũi nhọn card chỉ về trục */
.jt-card::before {
    content: "";
    position: absolute;
    top: 20px;
    right: -9px;
    width: 18px;
    height: 18px;
    background: inherit;
    border-top: 1px solid rgba(201, 162, 39, 0.25);
    border-right: 1px solid rgba(201, 162, 39, 0.25);
    transform: rotate(45deg);
}

.jt-item:nth-child(even) .jt-card::before {
    right: auto;
    left: -9px;
    transform: rotate(-135deg);
}

.jt-card h3 {
    font-family: var(--bio-serif);
    font-size: 1.12rem;
    font-weight: 700;
    color: var(--kgvh-text, #212529);
}

/* Khung ảnh tư liệu — viền kép đỏ/vàng, sắc thái ảnh xưa */
.jt-photo {
    display: block;
    margin-top: 0.9rem;
    border: 3px solid var(--bio-gold);
    outline: 1px solid rgba(142, 20, 24, 0.4);
    outline-offset: 4px;
    border-radius: 0.35rem;
    overflow: hidden;
}

.jt-photo img {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    filter: sepia(0.25) contrast(1.02);
    transition: filter 0.5s ease, transform 0.5s ease;
}

.jt-item.jt-active .jt-photo img,
.jt-photo:hover img {
    filter: sepia(0);
    transform: scale(1.03);
}

/* Mobile: 1 cột */
@media (max-width: 767.98px) {
    .jt-spine { left: 14px; transform: none; }

    .jt-item,
    .jt-item:nth-child(even) {
        width: 100%;
        margin-left: 0;
        padding: 0 0 2.25rem 3.4rem;
        transform: translateX(30px);
    }

    .jt-item.jt-in { transform: translateX(0); }

    .jt-medal,
    .jt-item:nth-child(even) .jt-medal {
        right: auto;
        left: -14px;
        width: 56px;
        height: 56px;
    }

    .jt-card::before,
    .jt-item:nth-child(even) .jt-card::before {
        right: auto;
        left: -9px;
        transform: rotate(-135deg);
    }
}

/* ============ KHỐI UNESCO ============ */
.bio-unesco {
    position: relative;
    background:
        radial-gradient(ellipse at 50% 130%, rgba(212, 175, 55, 0.4), transparent 60%),
        linear-gradient(135deg, #4d090c, var(--bio-red));
    border-radius: 1.25rem;
    padding: 3rem 2rem;
    color: #fff;
    text-align: center;
    overflow: hidden;
}

.bio-unesco::before {
    content: "";
    position: absolute;
    inset: 12px;
    border: 1px solid rgba(212, 175, 55, 0.55);
    border-radius: 0.9rem;
    pointer-events: none;
}

.bio-unesco-stars {
    color: var(--bio-gold);
    letter-spacing: 0.8em;
    font-size: 1.1rem;
    display: block;
    margin-bottom: 0.8rem;
}

.bio-unesco h2 {
    font-family: var(--bio-serif);
    font-weight: 800;
    letter-spacing: 0.12em;
}

.bio-unesco p {
    font-family: var(--bio-serif);
    font-style: italic;
    font-size: clamp(1.02rem, 1.9vw, 1.25rem);
    line-height: 1.7;
}

/* ============ GIẢM CHUYỂN ĐỘNG ============ */
@media (prefers-reduced-motion: reduce) {
    .bio-cine::before,
    .bio-cine::after,
    .bio-star-medal::before,
    .bio-scroll-hint {
        animation: none;
    }

    .bio-fade {
        opacity: 1;
        transform: none;
        animation: none;
    }

    .jt-item,
    .jt-item:nth-child(even) {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .jt-progress { height: 100% !important; transition: none; }
}